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    <a href="../index.html">cppreference.com</a> &gt; <a href=
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    "find_if.html">find_if</a>
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    find_if
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  <div class="syntax-name-format">
    Syntax:
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  <pre class="syntax-box">
  #include &lt;algorithm&gt;
  iterator find_if( iterator start, iterator end, UnPred up );
</pre>

  <p>The find_if() function searches for the first element between
  <em>start</em> and <em>end</em> for which the unary predicate
  <em>up</em> returns true.</p>

  <p>If such an element is found, an iterator pointing to that element
  is returned. Otherwise, an iterator pointing to <em>end</em> is
  returned.</p>

  <p>For example, the following code uses find_if() and a
  &quot;greater-than-zero&quot; unary predicate to the first positive,
  non-zero number in a list of numbers:</p>
  <pre class="example-code">
 int nums[] = { 0, -1, -2, -3, -4, 342, -5 };
 int* result;
 int start = 0;
 int end = 7;           

 result = find_if( nums + start, nums + end, bind2nd(greater&lt;int&gt;(), 0));
 if( *result == nums[end] ) {
   cout &lt;&lt; &quot;Did not find any number greater than zero&quot; &lt;&lt; endl;
 } else {
   cout &lt;&lt; &quot;Found a positive non-zero number: &quot; &lt;&lt; *result &lt;&lt; endl;
 }              
</pre>

  <div class="related-name-format">
    Related topics:
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  <div class="related-content">
    <a href="adjacent_find.html">adjacent_find</a><br>
    <a href="equal.html">equal</a><br>
    <a href="find.html">find</a><br>
    <a href="find_end.html">find_end</a><br>
    <a href="find_first_of.html">find_first_of</a><br>
    <a href="search_n.html">search_n</a>
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